1 /* 2 * NeXT Cube System Driver 3 * 4 * Copyright (c) 2011 Bryce Lanham 5 * Copyright (c) 2024 Mark Cave-Ayland 6 * 7 * This code is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published 9 * by the Free Software Foundation; either version 2 of the License, 10 * or (at your option) any later version. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "exec/hwaddr.h" 15 #include "exec/cpu-interrupt.h" 16 #include "system/system.h" 17 #include "system/qtest.h" 18 #include "hw/irq.h" 19 #include "hw/m68k/next-cube.h" 20 #include "hw/boards.h" 21 #include "hw/loader.h" 22 #include "hw/scsi/esp.h" 23 #include "hw/sysbus.h" 24 #include "qom/object.h" 25 #include "hw/char/escc.h" /* ZILOG 8530 Serial Emulation */ 26 #include "hw/block/fdc.h" 27 #include "hw/misc/empty_slot.h" 28 #include "hw/qdev-properties.h" 29 #include "qapi/error.h" 30 #include "qemu/error-report.h" 31 #include "ui/console.h" 32 #include "target/m68k/cpu.h" 33 #include "migration/vmstate.h" 34 35 /* #define DEBUG_NEXT */ 36 #ifdef DEBUG_NEXT 37 #define DPRINTF(fmt, ...) \ 38 do { printf("NeXT: " fmt , ## __VA_ARGS__); } while (0) 39 #else 40 #define DPRINTF(fmt, ...) do { } while (0) 41 #endif 42 43 #define ENTRY 0x0100001e 44 #define RAM_SIZE 0x4000000 45 #define ROM_FILE "Rev_2.5_v66.bin" 46 47 48 #define TYPE_NEXT_RTC "next-rtc" 49 OBJECT_DECLARE_SIMPLE_TYPE(NeXTRTC, NEXT_RTC) 50 51 struct NeXTRTC { 52 SysBusDevice parent_obj; 53 54 int8_t phase; 55 uint8_t ram[32]; 56 uint8_t command; 57 uint8_t value; 58 uint8_t status; 59 uint8_t control; 60 uint8_t retval; 61 62 qemu_irq data_out_irq; 63 qemu_irq power_irq; 64 }; 65 66 #define TYPE_NEXT_SCSI "next-scsi" 67 OBJECT_DECLARE_SIMPLE_TYPE(NeXTSCSI, NEXT_SCSI) 68 69 /* NeXT SCSI Controller */ 70 struct NeXTSCSI { 71 SysBusDevice parent_obj; 72 73 MemoryRegion scsi_mem; 74 75 SysBusESPState sysbus_esp; 76 77 MemoryRegion scsi_csr_mem; 78 uint8_t scsi_csr_1; 79 uint8_t scsi_csr_2; 80 }; 81 82 #define TYPE_NEXT_PC "next-pc" 83 OBJECT_DECLARE_SIMPLE_TYPE(NeXTPC, NEXT_PC) 84 85 /* NeXT Peripheral Controller */ 86 struct NeXTPC { 87 SysBusDevice parent_obj; 88 89 M68kCPU *cpu; 90 91 MemoryRegion floppy_mem; 92 MemoryRegion timer_mem; 93 MemoryRegion dummyen_mem; 94 MemoryRegion mmiomem; 95 MemoryRegion scrmem; 96 97 uint32_t scr1; 98 uint32_t scr2; 99 uint32_t old_scr2; 100 uint32_t int_mask; 101 uint32_t int_status; 102 uint32_t led; 103 104 NeXTSCSI next_scsi; 105 106 qemu_irq scsi_reset; 107 qemu_irq scsi_dma; 108 109 ESCCState escc; 110 111 NeXTRTC rtc; 112 qemu_irq rtc_data_irq; 113 qemu_irq rtc_cmd_reset_irq; 114 }; 115 116 typedef struct next_dma { 117 uint32_t csr; 118 119 uint32_t saved_next; 120 uint32_t saved_limit; 121 uint32_t saved_start; 122 uint32_t saved_stop; 123 124 uint32_t next; 125 uint32_t limit; 126 uint32_t start; 127 uint32_t stop; 128 129 uint32_t next_initbuf; 130 uint32_t size; 131 } next_dma; 132 133 #define TYPE_NEXT_MACHINE MACHINE_TYPE_NAME("next-cube") 134 OBJECT_DECLARE_SIMPLE_TYPE(NeXTState, NEXT_MACHINE) 135 136 struct NeXTState { 137 MachineState parent; 138 139 MemoryRegion rom; 140 MemoryRegion rom2; 141 MemoryRegion dmamem; 142 MemoryRegion bmapm1; 143 MemoryRegion bmapm2; 144 145 next_dma dma[10]; 146 }; 147 148 /* Thanks to NeXT forums for this */ 149 /* 150 static const uint8_t rtc_ram3[32] = { 151 0x94, 0x0f, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 152 0x00, 0x00, 0xfb, 0x6d, 0x00, 0x00, 0x7B, 0x00, 153 0x00, 0x00, 0x65, 0x6e, 0x00, 0x00, 0x00, 0x00, 154 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x13 155 }; 156 */ 157 static const uint8_t rtc_ram2[32] = { 158 0x94, 0x0f, 0x40, 0x03, 0x00, 0x00, 0x00, 0x00, 159 0x00, 0x00, 0xfb, 0x6d, 0x00, 0x00, 0x4b, 0x00, 160 0x41, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 161 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x84, 0x7e, 162 }; 163 164 #define SCR2_RTCLK 0x2 165 #define SCR2_RTDATA 0x4 166 #define SCR2_TOBCD(x) (((x / 10) << 4) + (x % 10)) 167 168 static void next_scr2_led_update(NeXTPC *s) 169 { 170 if (s->scr2 & 0x1) { 171 DPRINTF("fault!\n"); 172 s->led++; 173 if (s->led == 10) { 174 DPRINTF("LED flashing, possible fault!\n"); 175 s->led = 0; 176 } 177 } 178 } 179 180 static void next_scr2_rtc_update(NeXTPC *s) 181 { 182 uint8_t old_scr2_rtc, scr2_rtc; 183 184 old_scr2_rtc = extract32(s->old_scr2, 8, 8); 185 scr2_rtc = extract32(s->scr2, 8, 8); 186 187 if (scr2_rtc & 0x1) { 188 /* DPRINTF("RTC %x phase %i\n", scr2_2, rtc->phase); */ 189 /* If we are in going down clock... do something */ 190 if (((old_scr2_rtc & SCR2_RTCLK) != (scr2_rtc & SCR2_RTCLK)) && 191 ((scr2_rtc & SCR2_RTCLK) == 0)) { 192 if (scr2_rtc & SCR2_RTDATA) { 193 qemu_irq_raise(s->rtc_data_irq); 194 } else { 195 qemu_irq_lower(s->rtc_data_irq); 196 } 197 } 198 } else { 199 /* else end or abort */ 200 qemu_irq_raise(s->rtc_cmd_reset_irq); 201 } 202 } 203 204 static uint64_t next_mmio_read(void *opaque, hwaddr addr, unsigned size) 205 { 206 NeXTPC *s = NEXT_PC(opaque); 207 uint64_t val; 208 209 switch (addr) { 210 case 0x2000: /* 0x2007000 */ 211 /* DPRINTF("Read INT status: %x\n", s->int_status); */ 212 val = s->int_status; 213 break; 214 215 case 0x2800: /* 0x2007800 */ 216 DPRINTF("MMIO Read INT mask: %x\n", s->int_mask); 217 val = s->int_mask; 218 break; 219 220 case 0x7000 ... 0x7003: /* 0x200c000 */ 221 val = extract32(s->scr1, (4 - (addr - 0x7000) - size) << 3, 222 size << 3); 223 break; 224 225 case 0x8000 ... 0x8003: /* 0x200d000 */ 226 val = extract32(s->scr2, (4 - (addr - 0x8000) - size) << 3, 227 size << 3); 228 break; 229 230 default: 231 val = 0; 232 DPRINTF("MMIO Read @ 0x%"HWADDR_PRIx" size %d\n", addr, size); 233 break; 234 } 235 236 return val; 237 } 238 239 static void next_mmio_write(void *opaque, hwaddr addr, uint64_t val, 240 unsigned size) 241 { 242 NeXTPC *s = NEXT_PC(opaque); 243 244 switch (addr) { 245 case 0x2000: /* 0x2007000 */ 246 DPRINTF("INT Status old: %x new: %x\n", s->int_status, 247 (unsigned int)val); 248 s->int_status = val; 249 break; 250 251 case 0x2800: /* 0x2007800 */ 252 DPRINTF("INT Mask old: %x new: %x\n", s->int_mask, (unsigned int)val); 253 s->int_mask = val; 254 break; 255 256 case 0x7000 ... 0x7003: /* 0x200c000 */ 257 DPRINTF("SCR1 Write: %x\n", (unsigned int)val); 258 s->scr1 = deposit32(s->scr1, (4 - (addr - 0x7000) - size) << 3, 259 size << 3, val); 260 break; 261 262 case 0x8000 ... 0x8003: /* 0x200d000 */ 263 s->scr2 = deposit32(s->scr2, (4 - (addr - 0x8000) - size) << 3, 264 size << 3, val); 265 next_scr2_led_update(s); 266 next_scr2_rtc_update(s); 267 s->old_scr2 = s->scr2; 268 break; 269 270 default: 271 DPRINTF("MMIO Write @ 0x%"HWADDR_PRIx " with 0x%x size %u\n", addr, 272 (unsigned int)val, size); 273 } 274 } 275 276 static const MemoryRegionOps next_mmio_ops = { 277 .read = next_mmio_read, 278 .write = next_mmio_write, 279 .valid.min_access_size = 1, 280 .valid.max_access_size = 4, 281 .endianness = DEVICE_BIG_ENDIAN, 282 }; 283 284 #define SCSICSR_ENABLE 0x01 285 #define SCSICSR_RESET 0x02 /* reset scsi dma */ 286 #define SCSICSR_FIFOFL 0x04 287 #define SCSICSR_DMADIR 0x08 /* if set, scsi to mem */ 288 #define SCSICSR_CPUDMA 0x10 /* if set, dma enabled */ 289 #define SCSICSR_INTMASK 0x20 /* if set, interrupt enabled */ 290 291 #define NEXTDMA_SCSI(x) (0x10 + x) 292 #define NEXTDMA_FD(x) (0x10 + x) 293 #define NEXTDMA_ENTX(x) (0x110 + x) 294 #define NEXTDMA_ENRX(x) (0x150 + x) 295 #define NEXTDMA_CSR 0x0 296 #define NEXTDMA_NEXT 0x4000 297 #define NEXTDMA_LIMIT 0x4004 298 #define NEXTDMA_START 0x4008 299 #define NEXTDMA_STOP 0x400c 300 #define NEXTDMA_NEXT_INIT 0x4200 301 #define NEXTDMA_SIZE 0x4204 302 303 static void next_dma_write(void *opaque, hwaddr addr, uint64_t val, 304 unsigned int size) 305 { 306 NeXTState *next_state = NEXT_MACHINE(opaque); 307 308 switch (addr) { 309 case NEXTDMA_ENRX(NEXTDMA_CSR): 310 if (val & DMA_DEV2M) { 311 next_state->dma[NEXTDMA_ENRX].csr |= DMA_DEV2M; 312 } 313 314 if (val & DMA_SETENABLE) { 315 /* DPRINTF("SCSI DMA ENABLE\n"); */ 316 next_state->dma[NEXTDMA_ENRX].csr |= DMA_ENABLE; 317 } 318 if (val & DMA_SETSUPDATE) { 319 next_state->dma[NEXTDMA_ENRX].csr |= DMA_SUPDATE; 320 } 321 if (val & DMA_CLRCOMPLETE) { 322 next_state->dma[NEXTDMA_ENRX].csr &= ~DMA_COMPLETE; 323 } 324 325 if (val & DMA_RESET) { 326 next_state->dma[NEXTDMA_ENRX].csr &= ~(DMA_COMPLETE | DMA_SUPDATE | 327 DMA_ENABLE | DMA_DEV2M); 328 } 329 /* DPRINTF("RXCSR \tWrite: %x\n",value); */ 330 break; 331 332 case NEXTDMA_ENRX(NEXTDMA_NEXT_INIT): 333 next_state->dma[NEXTDMA_ENRX].next_initbuf = val; 334 break; 335 336 case NEXTDMA_ENRX(NEXTDMA_NEXT): 337 next_state->dma[NEXTDMA_ENRX].next = val; 338 break; 339 340 case NEXTDMA_ENRX(NEXTDMA_LIMIT): 341 next_state->dma[NEXTDMA_ENRX].limit = val; 342 break; 343 344 case NEXTDMA_SCSI(NEXTDMA_CSR): 345 if (val & DMA_DEV2M) { 346 next_state->dma[NEXTDMA_SCSI].csr |= DMA_DEV2M; 347 } 348 if (val & DMA_SETENABLE) { 349 /* DPRINTF("SCSI DMA ENABLE\n"); */ 350 next_state->dma[NEXTDMA_SCSI].csr |= DMA_ENABLE; 351 } 352 if (val & DMA_SETSUPDATE) { 353 next_state->dma[NEXTDMA_SCSI].csr |= DMA_SUPDATE; 354 } 355 if (val & DMA_CLRCOMPLETE) { 356 next_state->dma[NEXTDMA_SCSI].csr &= ~DMA_COMPLETE; 357 } 358 359 if (val & DMA_RESET) { 360 next_state->dma[NEXTDMA_SCSI].csr &= ~(DMA_COMPLETE | DMA_SUPDATE | 361 DMA_ENABLE | DMA_DEV2M); 362 /* DPRINTF("SCSI DMA RESET\n"); */ 363 } 364 /* DPRINTF("RXCSR \tWrite: %x\n",value); */ 365 break; 366 367 case NEXTDMA_SCSI(NEXTDMA_NEXT): 368 next_state->dma[NEXTDMA_SCSI].next = val; 369 break; 370 371 case NEXTDMA_SCSI(NEXTDMA_LIMIT): 372 next_state->dma[NEXTDMA_SCSI].limit = val; 373 break; 374 375 case NEXTDMA_SCSI(NEXTDMA_START): 376 next_state->dma[NEXTDMA_SCSI].start = val; 377 break; 378 379 case NEXTDMA_SCSI(NEXTDMA_STOP): 380 next_state->dma[NEXTDMA_SCSI].stop = val; 381 break; 382 383 case NEXTDMA_SCSI(NEXTDMA_NEXT_INIT): 384 next_state->dma[NEXTDMA_SCSI].next_initbuf = val; 385 break; 386 387 default: 388 DPRINTF("DMA write @ %x w/ %x\n", (unsigned)addr, (unsigned)val); 389 } 390 } 391 392 static uint64_t next_dma_read(void *opaque, hwaddr addr, unsigned int size) 393 { 394 NeXTState *next_state = NEXT_MACHINE(opaque); 395 uint64_t val; 396 397 switch (addr) { 398 case NEXTDMA_SCSI(NEXTDMA_CSR): 399 DPRINTF("SCSI DMA CSR READ\n"); 400 val = next_state->dma[NEXTDMA_SCSI].csr; 401 break; 402 403 case NEXTDMA_ENRX(NEXTDMA_CSR): 404 val = next_state->dma[NEXTDMA_ENRX].csr; 405 break; 406 407 case NEXTDMA_ENRX(NEXTDMA_NEXT_INIT): 408 val = next_state->dma[NEXTDMA_ENRX].next_initbuf; 409 break; 410 411 case NEXTDMA_ENRX(NEXTDMA_NEXT): 412 val = next_state->dma[NEXTDMA_ENRX].next; 413 break; 414 415 case NEXTDMA_ENRX(NEXTDMA_LIMIT): 416 val = next_state->dma[NEXTDMA_ENRX].limit; 417 break; 418 419 case NEXTDMA_SCSI(NEXTDMA_NEXT): 420 val = next_state->dma[NEXTDMA_SCSI].next; 421 break; 422 423 case NEXTDMA_SCSI(NEXTDMA_NEXT_INIT): 424 val = next_state->dma[NEXTDMA_SCSI].next_initbuf; 425 break; 426 427 case NEXTDMA_SCSI(NEXTDMA_LIMIT): 428 val = next_state->dma[NEXTDMA_SCSI].limit; 429 break; 430 431 case NEXTDMA_SCSI(NEXTDMA_START): 432 val = next_state->dma[NEXTDMA_SCSI].start; 433 break; 434 435 case NEXTDMA_SCSI(NEXTDMA_STOP): 436 val = next_state->dma[NEXTDMA_SCSI].stop; 437 break; 438 439 default: 440 DPRINTF("DMA read @ %x\n", (unsigned int)addr); 441 val = 0; 442 } 443 444 /* 445 * once the csr's are done, subtract 0x3FEC from the addr, and that will 446 * normalize the upper registers 447 */ 448 449 return val; 450 } 451 452 static const MemoryRegionOps next_dma_ops = { 453 .read = next_dma_read, 454 .write = next_dma_write, 455 .impl.min_access_size = 4, 456 .valid.min_access_size = 4, 457 .valid.max_access_size = 4, 458 .endianness = DEVICE_BIG_ENDIAN, 459 }; 460 461 static void next_irq(void *opaque, int number, int level) 462 { 463 NeXTPC *s = NEXT_PC(opaque); 464 M68kCPU *cpu = s->cpu; 465 int shift = 0; 466 467 /* first switch sets interrupt status */ 468 /* DPRINTF("IRQ %i\n",number); */ 469 switch (number) { 470 /* level 3 - floppy, kbd/mouse, power, ether rx/tx, scsi, clock */ 471 case NEXT_FD_I: 472 shift = 7; 473 break; 474 case NEXT_KBD_I: 475 shift = 3; 476 break; 477 case NEXT_PWR_I: 478 shift = 2; 479 break; 480 case NEXT_ENRX_I: 481 shift = 9; 482 break; 483 case NEXT_ENTX_I: 484 shift = 10; 485 break; 486 case NEXT_SCSI_I: 487 shift = 12; 488 break; 489 case NEXT_CLK_I: 490 shift = 5; 491 break; 492 493 /* level 5 - scc (serial) */ 494 case NEXT_SCC_I: 495 shift = 17; 496 break; 497 498 /* level 6 - audio etherrx/tx dma */ 499 case NEXT_ENTX_DMA_I: 500 shift = 28; 501 break; 502 case NEXT_ENRX_DMA_I: 503 shift = 27; 504 break; 505 case NEXT_SCSI_DMA_I: 506 shift = 26; 507 break; 508 case NEXT_SND_I: 509 shift = 23; 510 break; 511 case NEXT_SCC_DMA_I: 512 shift = 21; 513 break; 514 515 } 516 /* 517 * this HAS to be wrong, the interrupt handlers in mach and together 518 * int_status and int_mask and return if there is a hit 519 */ 520 if (s->int_mask & (1 << shift)) { 521 DPRINTF("%x interrupt masked @ %x\n", 1 << shift, cpu->env.pc); 522 /* return; */ 523 } 524 525 /* second switch triggers the correct interrupt */ 526 if (level) { 527 s->int_status |= 1 << shift; 528 529 switch (number) { 530 /* level 3 - floppy, kbd/mouse, power, ether rx/tx, scsi, clock */ 531 case NEXT_FD_I: 532 case NEXT_KBD_I: 533 case NEXT_PWR_I: 534 case NEXT_ENRX_I: 535 case NEXT_ENTX_I: 536 case NEXT_SCSI_I: 537 case NEXT_CLK_I: 538 m68k_set_irq_level(cpu, 3, 27); 539 break; 540 541 /* level 5 - scc (serial) */ 542 case NEXT_SCC_I: 543 m68k_set_irq_level(cpu, 5, 29); 544 break; 545 546 /* level 6 - audio etherrx/tx dma */ 547 case NEXT_ENTX_DMA_I: 548 case NEXT_ENRX_DMA_I: 549 case NEXT_SCSI_DMA_I: 550 case NEXT_SND_I: 551 case NEXT_SCC_DMA_I: 552 m68k_set_irq_level(cpu, 6, 30); 553 break; 554 } 555 } else { 556 s->int_status &= ~(1 << shift); 557 cpu_reset_interrupt(CPU(cpu), CPU_INTERRUPT_HARD); 558 } 559 } 560 561 static void nextdma_write(void *opaque, uint8_t *buf, int size, int type) 562 { 563 uint32_t base_addr; 564 int irq = 0; 565 uint8_t align = 16; 566 NeXTState *next_state = NEXT_MACHINE(qdev_get_machine()); 567 568 if (type == NEXTDMA_ENRX || type == NEXTDMA_ENTX) { 569 align = 32; 570 } 571 /* Most DMA is supposedly 16 byte aligned */ 572 if ((size % align) != 0) { 573 size -= size % align; 574 size += align; 575 } 576 577 /* 578 * prom sets the dma start using initbuf while the bootloader uses next 579 * so we check to see if initbuf is 0 580 */ 581 if (next_state->dma[type].next_initbuf == 0) { 582 base_addr = next_state->dma[type].next; 583 } else { 584 base_addr = next_state->dma[type].next_initbuf; 585 } 586 587 cpu_physical_memory_write(base_addr, buf, size); 588 589 next_state->dma[type].next_initbuf = 0; 590 591 /* saved limit is checked to calculate packet size by both, rom and netbsd */ 592 next_state->dma[type].saved_limit = (next_state->dma[type].next + size); 593 next_state->dma[type].saved_next = (next_state->dma[type].next); 594 595 /* 596 * 32 bytes under savedbase seems to be some kind of register 597 * of which the purpose is unknown as of yet 598 */ 599 /* stl_phys(s->rx_dma.base-32,0xFFFFFFFF); */ 600 601 if (!(next_state->dma[type].csr & DMA_SUPDATE)) { 602 next_state->dma[type].next = next_state->dma[type].start; 603 next_state->dma[type].limit = next_state->dma[type].stop; 604 } 605 606 /* Set dma registers and raise an irq */ 607 next_state->dma[type].csr |= DMA_COMPLETE; /* DON'T CHANGE THIS! */ 608 609 switch (type) { 610 case NEXTDMA_SCSI: 611 irq = NEXT_SCSI_DMA_I; 612 break; 613 } 614 615 next_irq(opaque, irq, 1); 616 next_irq(opaque, irq, 0); 617 } 618 619 static void nextscsi_read(void *opaque, uint8_t *buf, int len) 620 { 621 DPRINTF("SCSI READ: %x\n", len); 622 abort(); 623 } 624 625 static void nextscsi_write(void *opaque, uint8_t *buf, int size) 626 { 627 DPRINTF("SCSI WRITE: %i\n", size); 628 nextdma_write(opaque, buf, size, NEXTDMA_SCSI); 629 } 630 631 static void next_scsi_csr_write(void *opaque, hwaddr addr, uint64_t val, 632 unsigned size) 633 { 634 NeXTSCSI *s = NEXT_SCSI(opaque); 635 NeXTPC *pc = NEXT_PC(container_of(s, NeXTPC, next_scsi)); 636 637 switch (addr) { 638 case 0: 639 if (val & SCSICSR_FIFOFL) { 640 DPRINTF("SCSICSR FIFO Flush\n"); 641 /* will have to add another irq to the esp if this is needed */ 642 /* esp_puflush_fifo(esp_g); */ 643 } 644 645 if (val & SCSICSR_ENABLE) { 646 DPRINTF("SCSICSR Enable\n"); 647 /* 648 * qemu_irq_raise(s->scsi_dma); 649 * s->scsi_csr_1 = 0xc0; 650 * s->scsi_csr_1 |= 0x1; 651 * qemu_irq_pulse(s->scsi_dma); 652 */ 653 } 654 /* 655 * else 656 * s->scsi_csr_1 &= ~SCSICSR_ENABLE; 657 */ 658 659 if (val & SCSICSR_RESET) { 660 DPRINTF("SCSICSR Reset\n"); 661 /* I think this should set DMADIR. CPUDMA and INTMASK to 0 */ 662 qemu_irq_raise(pc->scsi_reset); 663 s->scsi_csr_1 &= ~(SCSICSR_INTMASK | 0x80 | 0x1); 664 qemu_irq_lower(pc->scsi_reset); 665 } 666 if (val & SCSICSR_DMADIR) { 667 DPRINTF("SCSICSR DMAdir\n"); 668 } 669 if (val & SCSICSR_CPUDMA) { 670 DPRINTF("SCSICSR CPUDMA\n"); 671 /* qemu_irq_raise(s->scsi_dma); */ 672 pc->int_status |= 0x4000000; 673 } else { 674 /* fprintf(stderr,"SCSICSR CPUDMA disabled\n"); */ 675 pc->int_status &= ~(0x4000000); 676 /* qemu_irq_lower(s->scsi_dma); */ 677 } 678 if (val & SCSICSR_INTMASK) { 679 DPRINTF("SCSICSR INTMASK\n"); 680 /* 681 * int_mask &= ~0x1000; 682 * s->scsi_csr_1 |= val; 683 * s->scsi_csr_1 &= ~SCSICSR_INTMASK; 684 * if (s->scsi_queued) { 685 * s->scsi_queued = 0; 686 * next_irq(s, NEXT_SCSI_I, level); 687 * } 688 */ 689 } else { 690 /* int_mask |= 0x1000; */ 691 } 692 if (val & 0x80) { 693 /* int_mask |= 0x1000; */ 694 /* s->scsi_csr_1 |= 0x80; */ 695 } 696 DPRINTF("SCSICSR1 Write: %"PRIx64 "\n", val); 697 s->scsi_csr_1 = val; 698 break; 699 700 case 1: 701 DPRINTF("SCSICSR2 Write: %"PRIx64 "\n", val); 702 s->scsi_csr_2 = val; 703 break; 704 705 default: 706 g_assert_not_reached(); 707 } 708 } 709 710 static uint64_t next_scsi_csr_read(void *opaque, hwaddr addr, unsigned size) 711 { 712 NeXTSCSI *s = NEXT_SCSI(opaque); 713 uint64_t val; 714 715 switch (addr) { 716 case 0: 717 DPRINTF("SCSI 4020 STATUS READ %X\n", s->scsi_csr_1); 718 val = s->scsi_csr_1; 719 break; 720 721 case 1: 722 DPRINTF("SCSI 4021 STATUS READ %X\n", s->scsi_csr_2); 723 val = s->scsi_csr_2; 724 break; 725 726 default: 727 g_assert_not_reached(); 728 } 729 730 return val; 731 } 732 733 static const MemoryRegionOps next_scsi_csr_ops = { 734 .read = next_scsi_csr_read, 735 .write = next_scsi_csr_write, 736 .valid.min_access_size = 1, 737 .valid.max_access_size = 1, 738 .endianness = DEVICE_BIG_ENDIAN, 739 }; 740 741 static void next_scsi_init(Object *obj) 742 { 743 NeXTSCSI *s = NEXT_SCSI(obj); 744 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 745 746 object_initialize_child(obj, "esp", &s->sysbus_esp, TYPE_SYSBUS_ESP); 747 748 memory_region_init_io(&s->scsi_csr_mem, obj, &next_scsi_csr_ops, 749 s, "csrs", 2); 750 751 memory_region_init(&s->scsi_mem, obj, "next.scsi", 0x40); 752 sysbus_init_mmio(sbd, &s->scsi_mem); 753 } 754 755 static void next_scsi_realize(DeviceState *dev, Error **errp) 756 { 757 NeXTSCSI *s = NEXT_SCSI(dev); 758 SysBusESPState *sysbus_esp; 759 SysBusDevice *sbd; 760 ESPState *esp; 761 NeXTPC *pcdev; 762 763 pcdev = NEXT_PC(container_of(s, NeXTPC, next_scsi)); 764 765 /* ESP */ 766 sysbus_esp = SYSBUS_ESP(&s->sysbus_esp); 767 esp = &sysbus_esp->esp; 768 esp->dma_memory_read = nextscsi_read; 769 esp->dma_memory_write = nextscsi_write; 770 esp->dma_opaque = pcdev; 771 sysbus_esp->it_shift = 0; 772 esp->dma_enabled = 1; 773 sbd = SYS_BUS_DEVICE(sysbus_esp); 774 if (!sysbus_realize(sbd, errp)) { 775 return; 776 } 777 memory_region_add_subregion(&s->scsi_mem, 0x0, 778 sysbus_mmio_get_region(sbd, 0)); 779 780 /* SCSI CSRs */ 781 memory_region_add_subregion(&s->scsi_mem, 0x20, &s->scsi_csr_mem); 782 783 scsi_bus_legacy_handle_cmdline(&s->sysbus_esp.esp.bus); 784 } 785 786 static const VMStateDescription next_scsi_vmstate = { 787 .name = "next-scsi", 788 .version_id = 0, 789 .minimum_version_id = 0, 790 .fields = (const VMStateField[]) { 791 VMSTATE_UINT8(scsi_csr_1, NeXTSCSI), 792 VMSTATE_UINT8(scsi_csr_2, NeXTSCSI), 793 VMSTATE_END_OF_LIST() 794 }, 795 }; 796 797 static void next_scsi_class_init(ObjectClass *klass, void *data) 798 { 799 DeviceClass *dc = DEVICE_CLASS(klass); 800 801 dc->desc = "NeXT SCSI Controller"; 802 dc->realize = next_scsi_realize; 803 dc->vmsd = &next_scsi_vmstate; 804 } 805 806 static const TypeInfo next_scsi_info = { 807 .name = TYPE_NEXT_SCSI, 808 .parent = TYPE_SYS_BUS_DEVICE, 809 .instance_init = next_scsi_init, 810 .instance_size = sizeof(NeXTSCSI), 811 .class_init = next_scsi_class_init, 812 }; 813 814 static void next_floppy_write(void *opaque, hwaddr addr, uint64_t val, 815 unsigned size) 816 { 817 switch (addr) { 818 case 0: 819 DPRINTF("FDCSR Write: %"PRIx64 "\n", val); 820 if (val == 0x0) { 821 /* qemu_irq_raise(s->fd_irq[0]); */ 822 } 823 break; 824 825 default: 826 g_assert_not_reached(); 827 } 828 } 829 830 static uint64_t next_floppy_read(void *opaque, hwaddr addr, unsigned size) 831 { 832 uint64_t val; 833 834 switch (addr) { 835 case 0: 836 DPRINTF("FD read @ %x\n", (unsigned int)addr); 837 val = 0x40 | 0x04 | 0x2 | 0x1; 838 break; 839 840 default: 841 g_assert_not_reached(); 842 } 843 844 return val; 845 } 846 847 static const MemoryRegionOps next_floppy_ops = { 848 .read = next_floppy_read, 849 .write = next_floppy_write, 850 .valid.min_access_size = 1, 851 .valid.max_access_size = 4, 852 .endianness = DEVICE_BIG_ENDIAN, 853 }; 854 855 static void next_timer_write(void *opaque, hwaddr addr, uint64_t val, 856 unsigned size) 857 { 858 switch (addr) { 859 case 0 ... 3: 860 /* Hardware timer latch - not implemented yet */ 861 break; 862 863 default: 864 g_assert_not_reached(); 865 } 866 } 867 868 static uint64_t next_timer_read(void *opaque, hwaddr addr, unsigned size) 869 { 870 uint64_t val; 871 872 switch (addr) { 873 case 0 ... 3: 874 /* 875 * These 4 registers are the hardware timer, not sure which register 876 * is the latch instead of data, but no problems so far. 877 * 878 * Hack: We need to have the LSB change consistently to make it work 879 */ 880 val = extract32(clock(), (4 - addr - size) << 3, 881 size << 3); 882 break; 883 884 default: 885 g_assert_not_reached(); 886 } 887 888 return val; 889 } 890 891 static const MemoryRegionOps next_timer_ops = { 892 .read = next_timer_read, 893 .write = next_timer_write, 894 .valid.min_access_size = 1, 895 .valid.max_access_size = 4, 896 .endianness = DEVICE_BIG_ENDIAN, 897 }; 898 899 static void next_dummy_en_write(void *opaque, hwaddr addr, uint64_t val, 900 unsigned size) 901 { 902 /* Do nothing */ 903 return; 904 } 905 906 static uint64_t next_dummy_en_read(void *opaque, hwaddr addr, unsigned size) 907 { 908 uint64_t val; 909 910 switch (addr) { 911 case 0: 912 /* For now return dummy byte to allow the Ethernet test to timeout */ 913 val = 0xff; 914 break; 915 916 default: 917 val = 0; 918 } 919 920 return val; 921 } 922 923 static const MemoryRegionOps next_dummy_en_ops = { 924 .read = next_dummy_en_read, 925 .write = next_dummy_en_write, 926 .valid.min_access_size = 1, 927 .valid.max_access_size = 4, 928 .endianness = DEVICE_BIG_ENDIAN, 929 }; 930 931 static bool next_rtc_cmd_is_write(uint8_t cmd) 932 { 933 return (cmd >= 0x80 && cmd <= 0x9f) || 934 (cmd == 0xb1); 935 } 936 937 static void next_rtc_data_in_irq(void *opaque, int n, int level) 938 { 939 NeXTRTC *rtc = NEXT_RTC(opaque); 940 941 if (rtc->phase < 8) { 942 rtc->command = (rtc->command << 1) | level; 943 944 if (rtc->phase == 7 && !next_rtc_cmd_is_write(rtc->command)) { 945 if (rtc->command <= 0x1f) { 946 /* RAM registers */ 947 rtc->retval = rtc->ram[rtc->command]; 948 } 949 if ((rtc->command >= 0x20) && (rtc->command <= 0x2f)) { 950 /* RTC */ 951 time_t time_h = time(NULL); 952 struct tm *info = localtime(&time_h); 953 rtc->retval = 0; 954 955 switch (rtc->command) { 956 case 0x20: 957 rtc->retval = SCR2_TOBCD(info->tm_sec); 958 break; 959 case 0x21: 960 rtc->retval = SCR2_TOBCD(info->tm_min); 961 break; 962 case 0x22: 963 rtc->retval = SCR2_TOBCD(info->tm_hour); 964 break; 965 case 0x24: 966 rtc->retval = SCR2_TOBCD(info->tm_mday); 967 break; 968 case 0x25: 969 rtc->retval = SCR2_TOBCD((info->tm_mon + 1)); 970 break; 971 case 0x26: 972 rtc->retval = SCR2_TOBCD((info->tm_year - 100)); 973 break; 974 } 975 } 976 if (rtc->command == 0x30) { 977 /* read the status 0x30 */ 978 rtc->retval = rtc->status; 979 } 980 if (rtc->command == 0x31) { 981 /* read the control 0x31 */ 982 rtc->retval = rtc->control; 983 } 984 } 985 } 986 if (rtc->phase >= 8 && rtc->phase < 16) { 987 if (next_rtc_cmd_is_write(rtc->command)) { 988 /* Shift in value to write */ 989 rtc->value = (rtc->value << 1) | level; 990 } else { 991 /* Shift out value to read */ 992 if (rtc->retval & (0x80 >> (rtc->phase - 8))) { 993 qemu_irq_raise(rtc->data_out_irq); 994 } else { 995 qemu_irq_lower(rtc->data_out_irq); 996 } 997 } 998 } 999 1000 rtc->phase++; 1001 if (rtc->phase == 16 && next_rtc_cmd_is_write(rtc->command)) { 1002 if (rtc->command >= 0x80 && rtc->command <= 0x9f) { 1003 /* RAM registers */ 1004 rtc->ram[rtc->command - 0x80] = rtc->value; 1005 } 1006 if (rtc->command == 0xb1) { 1007 /* write to 0x30 register */ 1008 if (rtc->value & 0x04) { 1009 /* clear FTU */ 1010 rtc->status = rtc->status & (~0x18); 1011 qemu_irq_lower(rtc->power_irq); 1012 } 1013 } 1014 } 1015 } 1016 1017 static void next_rtc_cmd_reset_irq(void *opaque, int n, int level) 1018 { 1019 NeXTRTC *rtc = NEXT_RTC(opaque); 1020 1021 if (level) { 1022 rtc->phase = 0; 1023 rtc->command = 0; 1024 rtc->value = 0; 1025 } 1026 } 1027 1028 static void next_rtc_reset_hold(Object *obj, ResetType type) 1029 { 1030 NeXTRTC *rtc = NEXT_RTC(obj); 1031 1032 rtc->status = 0x90; 1033 1034 /* Load RTC RAM - TODO: provide possibility to load contents from file */ 1035 memcpy(rtc->ram, rtc_ram2, 32); 1036 } 1037 1038 static void next_rtc_init(Object *obj) 1039 { 1040 NeXTRTC *rtc = NEXT_RTC(obj); 1041 1042 qdev_init_gpio_in_named(DEVICE(obj), next_rtc_data_in_irq, 1043 "rtc-data-in", 1); 1044 qdev_init_gpio_out_named(DEVICE(obj), &rtc->data_out_irq, 1045 "rtc-data-out", 1); 1046 qdev_init_gpio_in_named(DEVICE(obj), next_rtc_cmd_reset_irq, 1047 "rtc-cmd-reset", 1); 1048 qdev_init_gpio_out_named(DEVICE(obj), &rtc->power_irq, 1049 "rtc-power-out", 1); 1050 } 1051 1052 static const VMStateDescription next_rtc_vmstate = { 1053 .name = "next-rtc", 1054 .version_id = 3, 1055 .minimum_version_id = 3, 1056 .fields = (const VMStateField[]) { 1057 VMSTATE_INT8(phase, NeXTRTC), 1058 VMSTATE_UINT8_ARRAY(ram, NeXTRTC, 32), 1059 VMSTATE_UINT8(command, NeXTRTC), 1060 VMSTATE_UINT8(value, NeXTRTC), 1061 VMSTATE_UINT8(status, NeXTRTC), 1062 VMSTATE_UINT8(control, NeXTRTC), 1063 VMSTATE_UINT8(retval, NeXTRTC), 1064 VMSTATE_END_OF_LIST() 1065 }, 1066 }; 1067 1068 static void next_rtc_class_init(ObjectClass *klass, void *data) 1069 { 1070 DeviceClass *dc = DEVICE_CLASS(klass); 1071 ResettableClass *rc = RESETTABLE_CLASS(klass); 1072 1073 dc->desc = "NeXT RTC"; 1074 dc->vmsd = &next_rtc_vmstate; 1075 rc->phases.hold = next_rtc_reset_hold; 1076 } 1077 1078 static const TypeInfo next_rtc_info = { 1079 .name = TYPE_NEXT_RTC, 1080 .parent = TYPE_SYS_BUS_DEVICE, 1081 .instance_init = next_rtc_init, 1082 .instance_size = sizeof(NeXTRTC), 1083 .class_init = next_rtc_class_init, 1084 }; 1085 1086 static void next_pc_rtc_data_in_irq(void *opaque, int n, int level) 1087 { 1088 NeXTPC *s = NEXT_PC(opaque); 1089 uint8_t scr2_2 = extract32(s->scr2, 8, 8); 1090 1091 if (level) { 1092 scr2_2 |= SCR2_RTDATA; 1093 } else { 1094 scr2_2 &= ~SCR2_RTDATA; 1095 } 1096 1097 s->scr2 = deposit32(s->scr2, 8, 8, scr2_2); 1098 } 1099 1100 static void next_pc_reset_hold(Object *obj, ResetType type) 1101 { 1102 NeXTPC *s = NEXT_PC(obj); 1103 1104 /* Set internal registers to initial values */ 1105 /* 0x0000XX00 << vital bits */ 1106 s->scr1 = 0x00011102; 1107 s->scr2 = 0x00ff0c80; 1108 s->old_scr2 = s->scr2; 1109 } 1110 1111 static void next_pc_realize(DeviceState *dev, Error **errp) 1112 { 1113 NeXTPC *s = NEXT_PC(dev); 1114 SysBusDevice *sbd; 1115 DeviceState *d; 1116 1117 /* SCSI */ 1118 sbd = SYS_BUS_DEVICE(&s->next_scsi); 1119 if (!sysbus_realize(sbd, errp)) { 1120 return; 1121 } 1122 1123 d = DEVICE(object_resolve_path_component(OBJECT(&s->next_scsi), "esp")); 1124 sysbus_connect_irq(SYS_BUS_DEVICE(d), 0, 1125 qdev_get_gpio_in(DEVICE(s), NEXT_SCSI_I)); 1126 1127 s->scsi_reset = qdev_get_gpio_in(d, 0); 1128 s->scsi_dma = qdev_get_gpio_in(d, 1); 1129 1130 /* ESCC */ 1131 d = DEVICE(&s->escc); 1132 qdev_prop_set_uint32(d, "disabled", 0); 1133 qdev_prop_set_uint32(d, "frequency", 9600 * 384); 1134 qdev_prop_set_uint32(d, "it_shift", 0); 1135 qdev_prop_set_bit(d, "bit_swap", true); 1136 qdev_prop_set_chr(d, "chrB", serial_hd(1)); 1137 qdev_prop_set_chr(d, "chrA", serial_hd(0)); 1138 qdev_prop_set_uint32(d, "chnBtype", escc_serial); 1139 qdev_prop_set_uint32(d, "chnAtype", escc_serial); 1140 1141 sbd = SYS_BUS_DEVICE(d); 1142 if (!sysbus_realize(sbd, errp)) { 1143 return; 1144 } 1145 sysbus_connect_irq(sbd, 0, qdev_get_gpio_in(dev, NEXT_SCC_I)); 1146 sysbus_connect_irq(sbd, 1, qdev_get_gpio_in(dev, NEXT_SCC_DMA_I)); 1147 1148 /* RTC */ 1149 d = DEVICE(&s->rtc); 1150 if (!sysbus_realize(SYS_BUS_DEVICE(d), errp)) { 1151 return; 1152 } 1153 /* Data from NeXTPC to RTC */ 1154 qdev_connect_gpio_out_named(dev, "rtc-data-out", 0, 1155 qdev_get_gpio_in_named(d, "rtc-data-in", 0)); 1156 /* Data from RTC to NeXTPC */ 1157 qdev_connect_gpio_out_named(d, "rtc-data-out", 0, 1158 qdev_get_gpio_in_named(dev, 1159 "rtc-data-in", 0)); 1160 qdev_connect_gpio_out_named(dev, "rtc-cmd-reset", 0, 1161 qdev_get_gpio_in_named(d, "rtc-cmd-reset", 0)); 1162 qdev_connect_gpio_out_named(d, "rtc-power-out", 0, 1163 qdev_get_gpio_in(dev, NEXT_PWR_I)); 1164 } 1165 1166 static void next_pc_init(Object *obj) 1167 { 1168 NeXTPC *s = NEXT_PC(obj); 1169 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 1170 1171 qdev_init_gpio_in(DEVICE(obj), next_irq, NEXT_NUM_IRQS); 1172 1173 memory_region_init_io(&s->mmiomem, OBJECT(s), &next_mmio_ops, s, 1174 "next.mmio", 0x9000); 1175 sysbus_init_mmio(sbd, &s->mmiomem); 1176 1177 memory_region_init_io(&s->dummyen_mem, OBJECT(s), &next_dummy_en_ops, s, 1178 "next.en", 0x20); 1179 sysbus_init_mmio(sbd, &s->dummyen_mem); 1180 1181 object_initialize_child(obj, "next-scsi", &s->next_scsi, TYPE_NEXT_SCSI); 1182 sysbus_init_mmio(sbd, 1183 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->next_scsi), 0)); 1184 1185 memory_region_init_io(&s->floppy_mem, OBJECT(s), &next_floppy_ops, s, 1186 "next.floppy", 4); 1187 sysbus_init_mmio(sbd, &s->floppy_mem); 1188 1189 object_initialize_child(obj, "escc", &s->escc, TYPE_ESCC); 1190 sysbus_init_mmio(sbd, 1191 sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->escc), 0)); 1192 1193 memory_region_init_io(&s->timer_mem, OBJECT(s), &next_timer_ops, s, 1194 "next.timer", 4); 1195 sysbus_init_mmio(sbd, &s->timer_mem); 1196 1197 object_initialize_child(obj, "rtc", &s->rtc, TYPE_NEXT_RTC); 1198 1199 qdev_init_gpio_in_named(DEVICE(obj), next_pc_rtc_data_in_irq, 1200 "rtc-data-in", 1); 1201 qdev_init_gpio_out_named(DEVICE(obj), &s->rtc_data_irq, 1202 "rtc-data-out", 1); 1203 qdev_init_gpio_out_named(DEVICE(obj), &s->rtc_cmd_reset_irq, 1204 "rtc-cmd-reset", 1); 1205 } 1206 1207 /* 1208 * If the m68k CPU implemented its inbound irq lines as GPIO lines 1209 * rather than via the m68k_set_irq_level() function we would not need 1210 * this cpu link property and could instead provide outbound IRQ lines 1211 * that the board could wire up to the CPU. 1212 */ 1213 static const Property next_pc_properties[] = { 1214 DEFINE_PROP_LINK("cpu", NeXTPC, cpu, TYPE_M68K_CPU, M68kCPU *), 1215 }; 1216 1217 static const VMStateDescription next_pc_vmstate = { 1218 .name = "next-pc", 1219 .version_id = 4, 1220 .minimum_version_id = 4, 1221 .fields = (const VMStateField[]) { 1222 VMSTATE_UINT32(scr1, NeXTPC), 1223 VMSTATE_UINT32(scr2, NeXTPC), 1224 VMSTATE_UINT32(old_scr2, NeXTPC), 1225 VMSTATE_UINT32(int_mask, NeXTPC), 1226 VMSTATE_UINT32(int_status, NeXTPC), 1227 VMSTATE_UINT32(led, NeXTPC), 1228 VMSTATE_END_OF_LIST() 1229 }, 1230 }; 1231 1232 static void next_pc_class_init(ObjectClass *klass, void *data) 1233 { 1234 DeviceClass *dc = DEVICE_CLASS(klass); 1235 ResettableClass *rc = RESETTABLE_CLASS(klass); 1236 1237 dc->desc = "NeXT Peripheral Controller"; 1238 dc->realize = next_pc_realize; 1239 device_class_set_props(dc, next_pc_properties); 1240 dc->vmsd = &next_pc_vmstate; 1241 rc->phases.hold = next_pc_reset_hold; 1242 } 1243 1244 static const TypeInfo next_pc_info = { 1245 .name = TYPE_NEXT_PC, 1246 .parent = TYPE_SYS_BUS_DEVICE, 1247 .instance_init = next_pc_init, 1248 .instance_size = sizeof(NeXTPC), 1249 .class_init = next_pc_class_init, 1250 }; 1251 1252 static void next_cube_init(MachineState *machine) 1253 { 1254 NeXTState *m = NEXT_MACHINE(machine); 1255 M68kCPU *cpu; 1256 CPUM68KState *env; 1257 MemoryRegion *sysmem = get_system_memory(); 1258 const char *bios_name = machine->firmware ?: ROM_FILE; 1259 DeviceState *pcdev; 1260 1261 /* Initialize the cpu core */ 1262 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 1263 if (!cpu) { 1264 error_report("Unable to find m68k CPU definition"); 1265 exit(1); 1266 } 1267 env = &cpu->env; 1268 1269 /* Initialize CPU registers. */ 1270 env->vbr = 0; 1271 env->sr = 0x2700; 1272 1273 /* Peripheral Controller */ 1274 pcdev = qdev_new(TYPE_NEXT_PC); 1275 object_property_set_link(OBJECT(pcdev), "cpu", OBJECT(cpu), &error_abort); 1276 sysbus_realize_and_unref(SYS_BUS_DEVICE(pcdev), &error_fatal); 1277 1278 /* 64MB RAM starting at 0x04000000 */ 1279 memory_region_add_subregion(sysmem, 0x04000000, machine->ram); 1280 1281 /* Framebuffer */ 1282 sysbus_create_simple(TYPE_NEXTFB, 0x0B000000, NULL); 1283 1284 /* MMIO */ 1285 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 0, 0x02005000); 1286 1287 /* BMAP IO - acts as a catch-all for now */ 1288 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 1, 0x02100000); 1289 1290 /* en network (dummy) */ 1291 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 1, 0x02106000); 1292 1293 /* unknown: Brightness control register? */ 1294 empty_slot_init("next.unknown.0", 0x02110000, 0x10); 1295 /* unknown: Magneto-Optical drive controller? */ 1296 empty_slot_init("next.unknown.1", 0x02112000, 0x10); 1297 1298 /* SCSI */ 1299 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 2, 0x02114000); 1300 /* Floppy */ 1301 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 3, 0x02114108); 1302 /* ESCC */ 1303 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 4, 0x02118000); 1304 1305 /* unknown: Serial clock configuration register? */ 1306 empty_slot_init("next.unknown.2", 0x02118004, 0x10); 1307 1308 /* Timer */ 1309 sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 5, 0x0211a000); 1310 1311 /* BMAP memory */ 1312 memory_region_init_ram_flags_nomigrate(&m->bmapm1, NULL, "next.bmapmem", 1313 64, RAM_SHARED, &error_fatal); 1314 memory_region_add_subregion(sysmem, 0x020c0000, &m->bmapm1); 1315 /* The Rev_2.5_v66.bin firmware accesses it at 0x820c0020, too */ 1316 memory_region_init_alias(&m->bmapm2, NULL, "next.bmapmem2", &m->bmapm1, 1317 0x0, 64); 1318 memory_region_add_subregion(sysmem, 0x820c0000, &m->bmapm2); 1319 1320 /* KBD */ 1321 sysbus_create_simple(TYPE_NEXTKBD, 0x0200e000, NULL); 1322 1323 /* Load ROM here */ 1324 memory_region_init_rom(&m->rom, NULL, "next.rom", 0x20000, &error_fatal); 1325 memory_region_add_subregion(sysmem, 0x01000000, &m->rom); 1326 memory_region_init_alias(&m->rom2, NULL, "next.rom2", &m->rom, 0x0, 1327 0x20000); 1328 memory_region_add_subregion(sysmem, 0x0, &m->rom2); 1329 if (load_image_targphys(bios_name, 0x01000000, 0x20000) < 8) { 1330 if (!qtest_enabled()) { 1331 error_report("Failed to load firmware '%s'.", bios_name); 1332 } 1333 } else { 1334 uint8_t *ptr; 1335 /* Initial PC is always at offset 4 in firmware binaries */ 1336 ptr = rom_ptr(0x01000004, 4); 1337 g_assert(ptr != NULL); 1338 env->pc = ldl_be_p(ptr); 1339 if (env->pc >= 0x01020000) { 1340 error_report("'%s' does not seem to be a valid firmware image.", 1341 bios_name); 1342 exit(1); 1343 } 1344 } 1345 1346 /* DMA */ 1347 memory_region_init_io(&m->dmamem, NULL, &next_dma_ops, machine, 1348 "next.dma", 0x5000); 1349 memory_region_add_subregion(sysmem, 0x02000000, &m->dmamem); 1350 } 1351 1352 static void next_machine_class_init(ObjectClass *oc, void *data) 1353 { 1354 MachineClass *mc = MACHINE_CLASS(oc); 1355 1356 mc->desc = "NeXT Cube"; 1357 mc->init = next_cube_init; 1358 mc->block_default_type = IF_SCSI; 1359 mc->default_ram_size = RAM_SIZE; 1360 mc->default_ram_id = "next.ram"; 1361 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040"); 1362 mc->no_cdrom = true; 1363 } 1364 1365 static const TypeInfo next_typeinfo = { 1366 .name = TYPE_NEXT_MACHINE, 1367 .parent = TYPE_MACHINE, 1368 .class_init = next_machine_class_init, 1369 .instance_size = sizeof(NeXTState), 1370 }; 1371 1372 static void next_register_type(void) 1373 { 1374 type_register_static(&next_typeinfo); 1375 type_register_static(&next_pc_info); 1376 type_register_static(&next_scsi_info); 1377 type_register_static(&next_rtc_info); 1378 } 1379 1380 type_init(next_register_type) 1381